Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/dom/DocumentParser.h

Index: third_party/WebKit/Source/core/dom/DocumentParser.h
diff --git a/third_party/WebKit/Source/core/dom/DocumentParser.h b/third_party/WebKit/Source/core/dom/DocumentParser.h
index abbf48dfb2bb5dce061f5d5923df44ec3c76a015..58b48b5cdaf7c4fa30f3f08169d7f228831818dd 100644
--- a/third_party/WebKit/Source/core/dom/DocumentParser.h
+++ b/third_party/WebKit/Source/core/dom/DocumentParser.h
@@ -36,7 +36,7 @@ class SegmentedString;
 class ScriptableDocumentParser;
 class TextResourceDecoder;
 
-class DocumentParser : public RefCountedWillBeGarbageCollectedFinalized<DocumentParser> {
+class DocumentParser : public GarbageCollectedFinalized<DocumentParser> {
 public:
     virtual ~DocumentParser();
     DECLARE_VIRTUAL_TRACE();
@@ -112,9 +112,9 @@ private:
 
     // Every DocumentParser needs a pointer back to the document.
     // m_document will be 0 after the parser is stopped.
-    RawPtrWillBeMember<Document> m_document;
+    Member<Document> m_document;
 
-    WillBeHeapHashSet<RawPtrWillBeWeakMember<DocumentParserClient>> m_clients;
+    HeapHashSet<WeakMember<DocumentParserClient>> m_clients;
 };
 
 } // namespace blink